[INFO] fetching crate kefta 0.0.1...
[INFO] checking kefta-0.0.1 against try#8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f for pr-114559
[INFO] extracting crate kefta 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate kefta 0.0.1 on toolchain 8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kefta 0.0.1
[INFO] finished tweaking crates.io crate kefta 0.0.1
[INFO] tweaked toml for crates.io crate kefta 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c273c5b8a03ac045424afe1640ee6e1d5dba0bd8c24ee3c4fab3d9df1cb3c00
[INFO] running `Command { std: "docker" "start" "-a" "4c273c5b8a03ac045424afe1640ee6e1d5dba0bd8c24ee3c4fab3d9df1cb3c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c273c5b8a03ac045424afe1640ee6e1d5dba0bd8c24ee3c4fab3d9df1cb3c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c273c5b8a03ac045424afe1640ee6e1d5dba0bd8c24ee3c4fab3d9df1cb3c00", kill_on_drop: false }`
[INFO] [stdout] 4c273c5b8a03ac045424afe1640ee6e1d5dba0bd8c24ee3c4fab3d9df1cb3c00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 520a338c7b41bfe0bfc03aab549c1c6286d0aa9cfa611f9ab68f146f13d8a7f6
[INFO] running `Command { std: "docker" "start" "-a" "520a338c7b41bfe0bfc03aab549c1c6286d0aa9cfa611f9ab68f146f13d8a7f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]     Checking unicode-ident v1.0.11
[INFO] [stderr]     Checking litrs v0.2.3
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking kefta_core v0.0.1
[INFO] [stdout] error[E0492]: constants cannot refer to interior mutable data
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/kefta_core-0.0.1/src/structs/map.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 | const _EMPTY_REF: &Vec<AttrNode> = &_EMPTY;
[INFO] [stdout]   |                                    ^^^^^^^ this borrow of an interior mutable value may end up in the final value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0492`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kefta_core` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "520a338c7b41bfe0bfc03aab549c1c6286d0aa9cfa611f9ab68f146f13d8a7f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "520a338c7b41bfe0bfc03aab549c1c6286d0aa9cfa611f9ab68f146f13d8a7f6", kill_on_drop: false }`
[INFO] [stdout] 520a338c7b41bfe0bfc03aab549c1c6286d0aa9cfa611f9ab68f146f13d8a7f6
